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TDL Electronics RTL 4

Reflex Transmission Line Loudspeaker

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TDL Electronics RTL 4


Employing two bass units, these 'reflex transmission line' speakers have even greater power handling and sound pressure level capability.

The TDL RTL 4 is a scaled up version of the RTL 3, using larger drive units in a proportionately dimensioned enclosure.

Ideally suited to the bigger room, they are able to reproduce the sound stage at a realistic volume, even from modest amplification, and yet retain a detailed treble and extended bass presentation when played at low levels.


Type: 2 way, 3 driver loudspeaker system

Frequency Response: 30Hz to 20kHz

Recommended Amplifier: 20 to 150W

Crossover Frequency: 3000Hz

Impedance: 8Ω

Sensitivity: 90dB

Bass: 2 x 222mm loaded polypropylene cone

Tweeter: 1 x 25mm soft dome

Enclosure: reflex transmission line

Finish: black ash, rosewood

Dimensions: 930 x 270 x 373mm

Weight: 23kg


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This website is not affiliated with or sponsored by TDL Electronics. To purchase RTL 4 spares or accessories, please contact the company via their website or visit an authorised retailer.